The JBarone SSP was very easy to install, I have not installed the metal bushings which is part of the Stage II kit yet since that required me to mess with the interior trim pieces. I would have if I had to adjust the shift linkage but as luck would have it, I am able to run through the gears pretty smoothly. I put about 120 miles on the car today and I am enjoying the car even more with the JB SSP installed, love the short throw and shifts did not feel any heavier than stock as others have said. This transmission feels much better than the BMW 335i's 6SPD. Shifts are much more precise and direct, not rubbery like the Bimmer's. I mastered heel/toeing that Bimmer on the Nurburgring but I was never able to do it very well in normal driving, don't remember if it was the brake pedal or the gas. With this MS3, I can heel/ toe anytime I want effortlessly. Makes me want to go drive it now.....